I guess the value equation is rust-free body + minitub & spring relocation + wheels & tires.
I like it, in spite of the browniness...
If I had an engine & trans, I could get pretty tempted at $7500 or so; more so if it was blue or red or green.
Put any kind of steam in the thing, and you'll need to deal with the 11.50 part of the rulebook.
And probably a Dana & subframe ties.